1. BAE Systems Portsmouth Dockyard: One of the historic dockyard facilities in Portsmouth, England, it is a significant part of UK’s naval history as it was the place where numerous battleships were built and repaired. It continues to offer naval shipbuilding and repair works.
2. Brooklyn Navy Yard: Located in New York City, this dockyard was once a major hub for the United States Navy. Today, it still serves as a site for ship building, repair and conversion of a variety of vessels.
3. Singapore's Sembcorp Marine Ltd: This renowned dockyard company specializes in the repair, conversion and upgrading of a wide range of vessels. It also builds and repairs oil rigs and offshore platforms, making it one of Asia’s biggest dockyard facilities.
4. Kawasaki Shipbuilding Corporation in Japan: As one of the world's leading shipbuilders, this dockyard constructs a variety of ships, including LNG carriers, LPG carriers, bulk carriers and cruise ships. It also handles a substantial amount of repair and upgrading duties for existing vessels.
5. Damen Shipyards in the Netherlands: This internationally known shipbuilding and dockyard company designs, builds, and repairs various types of vessels, including tugboats, workboats, naval vessels and passenger ships. The facility is known for its focus on quality and technologically advanced shipbuilding processes.